EFI finally done

[finkbuilt]

Finkbuilt write-up to follow soon...

[winstontj]

Finkbuilt write-up to follow soon...

What did you use for cold start? (both air & fuel)

[themoose]

Can't wait to see the write-up so I can get working on mine!

[finkbuilt]

For idle control I am using a VDO PWM air bypass valve. You have to do a few board mods to drive it, but it is easy.

Fuel - Megasquirt has some warmup enrichment params that you have to tweak.

Finkbuilt write-up to follow soon...

What did you use for cold start? (both air & fuel)

[Zenon]

Looks soooo clean, nice work.

regards,

Zenon

[PSloan]

How does it run/drive?

[finkbuilt]

Thanks Zenon,

Your documentation was the inspiration for me to do this.

How does it drive? Fantastic!

Loads of low-end torque. I still have some tuning to do to optimize it, mostly to the accelleration enrichments.

My initial reaction is that maybe the 58mm 325is Throttle body is a hair too large, as if feels like it opens really quickly, but I may just need to make a longer arm for my throttle linkage.

Also, I dont have the duty cycle curve for the idle valve quite figured out yet. All in all I would have to rank it as a smashing success.

steve

Looks soooo clean, nice work.

regards,

Zenon

[jgerry2002]

Its nice to see a fuel injection conversion without a rats nest of wires. That looks really nice.

Might try that path someday with the '76... but I finally dialed in my Weber 40-40 so it may wait a while.

[winstontj]

For idle control I am using a VDO PWM air bypass valve. You have to do a few board mods to drive it, but it is easy.

Fuel - Megasquirt has some warmup enrichment params that you have to tweak.

Forgive my question but where is your cold start fuel/air inlet? All I see is a block-off plate where the standard e30 one would be. Do you just use an air bypass valve and run the injectors a little rich on start?

TIA,

TJW

EDIT: PS - that's really nice and clean looking! Well done! You've just raised the bar and given me something to strive for!

[finkbuilt]

Forgive my question but where is your cold start fuel/air inlet? All I see is a block-off plate where the standard e30 one would be. Do you just use an air bypass valve and run the injectors a little rich on start?

I plumbed it between a fitting in the TB base, and a port in the E30 intake boot.

http://www.finkbuilt.com/static/images/articles/ms4a.jpg

[Harv]

Winston, There is no cold start injecter in a Megasquirt system. What they do is have a cold start prime and rich circut (fuel map adjustment). In my old 145 Volvo I used a 1/4 turn ball valve plumed to the intake and used it as a manual idle air control.

John

[winstontj]

Winston, There is no cold start injecter in a Megasquirt system. What they do is have a cold start prime and rich circut (fuel map adjustment). In my old 145 Volvo I used a 1/4 turn ball valve plumed to the intake and used it as a manual idle air control.

John

So the MS litterally runs rich for a little bit till things are warm. Then I see he's got the aux air valve thingy underneath which is nice that it's hidden. I'm starting to like this more and more. My fear was that I'd have to hook up all that crap like cold start injector, etc. but now you i'm learning and you guys are showing me how simple and easy much of this is.

(sorry if this hijacks the thread)

Do you think it would be realistic to put a cam, like how a weber down-draught carb has for the cold idle or choke idle? So make a cam or a lobed cam that would activate based on temperature? This way that would provide more air at the TB and allow you to eliminate the aux air valve. - is this a bad idea?

[Harv]

I think it would be more trouble than it's worth. Can't remember his name but the guy with the Atlantik colored Megasquirted o2 I think used a aux air valve from a 320i. They are based on temp with a hot wire heatting up a spring that opens and closes an air valve. Also, if you move the throttle around durring start the Megasquirt can get confused with any throttle movement, just like any EFI car.

John